Hello,
downloading and installing the eLicenser Control Application does not change the content of any connected eLicenser at all. During this process a USB driver, some runtime modules and the eLCC viewer application are
installed on your computer.
The difference you mention (have a USB eLicenser connected or not) is related to the way how the USB driver is installed, and a recommended way to have the related hardware connected or not. This process was changed to make the installation process more safe.
Anyway, you may run the installer on as many computers as you want or need without changing the license content at all.
Thanks,
Timo